Okok, thank you guys, my setup will be i3 2120 and 6770, 4gb ram (is 8 really necessary?). I play a little bit of everything, from bf3 to diablo 3 (getting today)

You won't have any issues maxing out D3 but BF3 will only be playable on medium at best with that graphics card. I'm not saying go way over budget for BF3 eye candy but just an FYI you wont be running it at ultra + MSAA x4. Although you haven't disclosed your monitor size/resolution you will be using so that will come into play as well.

The 6770 is a rebadged 5770 with HDMI 1.4a and a couple of other tiny features, performance is IDENTICAL between them. I'd recommend a 5770 for cost alone if you can find it for $10-20 cheaper than a 6770. Also the 550ti SLIGHTLY beats the 6770 at MOST games while consumping 10-15% more power (very minimal only 10-15w more).